Anyone know how to explain this?

[Bacon King]

http://www.usa.com/barrow-county-ga-income-and-careers.htm#Median-Household-Income-by-Races

Barrow County, Georgia: Median Household Income by Race, per 2010 ACS

White   $52,817
Black   $58,491
Hispanic   $72,955
Asian   $78,179

Barrow County is in the outer Atlanta exurbs, but still rural in some places. This is where I grew up, and where my parents still live; in spite of my familiarity with the county I have no explanation for how or why whites have the lowest household income of any racial group.

Any ideas?

[minionofmidas]

Small sample sizes, plus the rurals are going to be poorer (esp. on income instead of assets) than the suburbanites - and the rurals-turned-suburbanites poorer than the incomers - and the Asians and Hispanics are going to all be suburban incomers.